It wasn’t just luck that allowed Alex and Marta to survive a harsh Alberta winter in their 45-year-old RV. They added a bunch of insulation, both hidden and exposed, to keep the inside of their vintage Class C motorhome cozy and livable during even the coldest of winter nights.

Wayne, their RV, got a healthy dose of extra foam board insulation, Reflectix, window plastic, and even some padding added to the floor. See how they made the critical improvements in the video below.